Java J2EE Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

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Java J2EE Interview Questions

Questions Answers Views Company eMail

If your team member writes code with lots of static variables and static methods, will it cause any side effects?

KPIT,

3 7679

If I have 1000 objects and my requirement is to sort them quickly, then which collection would you recommend and why?

KPIT,

5 9133

I have a Person object with 5 variables and I want to store them in a file called Person.txt. What should I do?

KPIT,

3 7049

There is a Banking application. It has 2 types of account, Savings and Current. Write a method calculateInterest by passing an ArrayList of these account objects and calculate Interest accordingly. Write code for this situation

ABC, KPIT,

1 3654

If two threads call a static method at the same point of time, what will happen?

KPIT,

3 9027

There are 2 methods in a class. Both have the same method signature except for return types. Is this overloading or overriding or what is it?

KPIT,

9 14177

There are 2 classes, 1 LandAnimal and another WaterAnimal. There is another class Animal which wants to have the properties of both LandAnimal and WaterAnimal. How will you design this situation?

KPIT,

6 11069

I have a String s = java; What is the output when I say s.replaceAll('j', 'k'); Also what is the value of s after replacing?

KPIT,

8 12123

If you are reviewing the code of your team members, what points will you look at, assuming the performance of the application is not so great

KPIT,

2 6442

How will you convert an ArrayList to Arrays?

KPIT,

4 9557

steps to connect with Oracle Databse using TYPE-2 Jdbc driver.

3 12099

how do we get the connection from connection pool

1 4459

what are the methods of an object class?

3 6558

can u give one sinario when you use Abstract Class and When you use Interface.

ITC Infotech,

5 10046

What does 'stub' mean in weblogic server?

3 22681

Un-Answered Questions { Java J2EE }

Explain public static void main(string args[]) in java.

1064

How to sort array in descending order in java?

987

Hi frnd can i any one kindly can post for me portlet,hibernate and spring example application and with flow explantion configuration using Jdeveloper.and related links ar tutorials kindly please send me .its urgent for me .thanks in advance...........else can any one send to kondaiah.goddeti@gmail.com

2259

What is a classloader in java?

1084

what are the different modes of archival? Explain each mode in two lines each?

994

Can we return resultset in java?

988

What is lazy class?

481

What is the difference between filters and interceptors ?

1302

hi actully i hav form columns with origin and destination names .as like as i need to create one more column with name amount. my requirement is when i select origin and destination columns automatically i need to get amount from database.how can i. please tel me with relative code

2865

Write a program to find the whether a number is an Armstrong number or not?

1095

i want test pattern of zylog company and some examples also

2856

What is parsing in java?

1032

Hi frnds how to lock an user when he enter wrong credentials more than 3 time using java or j2ee tech take username and password in a bean no need to connect DB and validate give me some sample application code or links its urgent for me thanks in advance

2415

explain different ways of using thread? : Java thread

1079

How to create a base64 decoder in java8?

1131

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